[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.196' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   30.423020] IPVS: ftp: loaded support on port[0] = 21
[   32.459458] Bluetooth: hci0 command 0x0409 tx timeout
[   34.537589] Bluetooth: hci0 command 0x041b tx timeout
[   35.454816] INFO: trying to register non-static key.
[   35.459930] the code is fine but needs lockdep annotation.
[   35.465529] turning off the locking correctness validator.
[   35.471176] CPU: 1 PID: 8008 Comm: syz-executor125 Not tainted 4.14.206-syzkaller #0
[   35.479042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.488371] Call Trace:
[   35.490939]  dump_stack+0x1b2/0x283
[   35.494564]  register_lock_class+0x32b/0x1320
[   35.499044]  ? account_entity_enqueue+0x2e5/0x440
[   35.503866]  ? static_obj+0x50/0x50
[   35.507472]  ? check_preemption_disabled+0x35/0x240
[   35.512465]  __lock_acquire+0x167/0x3f20
[   35.516503]  ? lock_downgrade+0x740/0x740
[   35.520642]  ? lock_downgrade+0x740/0x740
[   35.524782]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   35.529860]  ? trace_hardirqs_on+0x10/0x10
[   35.534069]  ? __queue_work+0x517/0xf70
[   35.538030]  ? lock_downgrade+0x740/0x740
[   35.542153]  ? do_raw_spin_unlock+0x164/0x220
[   35.546626]  lock_acquire+0x170/0x3f0
[   35.550408]  ? skb_dequeue+0x1c/0x180
[   35.554189]  _raw_spin_lock_irqsave+0x8c/0xc0
[   35.558667]  ? skb_dequeue+0x1c/0x180
[   35.562444]  skb_dequeue+0x1c/0x180
[   35.566045]  skb_queue_purge+0x21/0x30
[   35.569908]  l2cap_chan_del+0x56d/0x950
[   35.573857]  l2cap_chan_close+0x103/0x870
[   35.577980]  ? __set_monitor_timer+0x1d0/0x1d0
[   35.582536]  ? wait_for_completion_io+0x10/0x10
[   35.587180]  ? __local_bh_enable_ip+0xc1/0x170
[   35.591736]  l2cap_sock_shutdown+0x2e7/0xc20
[   35.596117]  ? do_exit+0xa03/0x27f0
[   35.600673]  ? l2cap_skb_msg_name+0x120/0x120
[   35.605167]  ? exit_to_usermode_loop+0x160/0x200
[   35.609893]  ? do_syscall_64+0x4a3/0x640
[   35.613927]  ? entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   35.619372]  ? l2cap_sock_release+0x6a/0x280
[   35.623753]  ? lock_downgrade+0x740/0x740
[   35.627885]  l2cap_sock_release+0x77/0x280
[   35.632099]  __sock_release+0xcd/0x2b0
[   35.636011]  ? __sock_release+0x2b0/0x2b0
[   35.640142]  sock_close+0x15/0x20
[   35.643575]  __fput+0x25f/0x7a0
[   35.646839]  task_work_run+0x11f/0x190
[   35.650724]  do_exit+0xa08/0x27f0
[   35.654161]  ? trace_hardirqs_on+0x10/0x10
[   35.658372]  ? mm_update_next_owner+0x5b0/0x5b0
[   35.663016]  ? get_signal+0x323/0x1ca0
[   35.666877]  ? lock_acquire+0x170/0x3f0
[   35.670825]  ? lock_downgrade+0x740/0x740
[   35.674962]  do_group_exit+0x100/0x2e0
[   35.678825]  get_signal+0x38d/0x1ca0
[   35.682528]  do_signal+0x7c/0x1550
[   35.686040]  ? __local_bh_enable_ip+0xc1/0x170
[   35.690602]  ? trace_hardirqs_on_caller+0x3a8/0x580
[   35.695604]  ? l2cap_sock_connect+0x30b/0x520
[   35.700072]  ? __local_bh_enable_ip+0xc1/0x170
[   35.704642]  ? setup_sigcontext+0x820/0x820
[   35.708938]  ? l2cap_sock_accept+0x4d0/0x4d0
[   35.713330]  ? security_socket_connect+0x83/0xb0
[   35.718081]  ? l2cap_sock_accept+0x4d0/0x4d0
[   35.722463]  ? SyS_connect+0xf6/0x240
[   35.726236]  ? SyS_accept+0x30/0x30
[   35.733279]  ? __fdget+0x167/0x1f0
[   35.736803]  ? security_socket_setsockopt+0x83/0xb0
[   35.741801]  ? SyS_setsockopt+0x130/0x1e0
[   35.745922]  ? exit_to_usermode_loop+0x41/0x200
[   35.750569]  exit_to_usermode_loop+0x160/0x200
[   35.755130]  do_syscall_64+0x4a3/0x640
[   35.758996]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   35.764163] RIP: 0033:0x446eb9
[   35.767415] RSP: 002b:00007ffd40424fc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[   35.775094] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446eb9
[   35.782354] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000004
[   35.789614] RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff
[   35.796973] R10: 000000000000000c R11: 0000000000000246 R12: 000000000213d850
executing program
[   35.804222] R13: 0000000000000072 R14: 0000000000000000 R15: 0000000000000000
[   36.616325] Bluetooth: hci0 command 0x040f tx timeout
[   38.695276] Bluetooth: hci0 command 0x0419 tx timeout
executing program
[   40.774323] Bluetooth: hci0 command 0x0405 tx timeout